Lugalvan DC is an ingredient of transparent protective coatings for use in the electroplating industry.
Lugalvan DC is an aqueous emulsion of an ethylene copolymer that is commonly applied to metal surfaces to improve resistance to corrosion and to improve aesthetic appearance.
Applications of Lugalvan DC:
Lugalvan DC is applied to metal surfaces to improve their resistance to corrosion and their aesthetic appearance.
Lugalvan DC forms films which adhere well to metal.
Lugalvan DC is especially effective on chromated, zinc-plated parts.
Lugalvan DC also reduces the tendency of chromium(VI) ions to be leached out.
Lugalvan DC can be used to prevent nickel and other metals from tarnishing, and it can be applied as a decorative coating to non-ferrous metals.
Lugalvan DC does not contain an emulsifier.
Lugalvan DC is miscible with water in all proportions, provided the pH does not fall below 8.5.
Experience has shown that Lugalvan DC can be advisable to add ammonia or amines such as dimethylethanolamine to maintain the pH at around 9 in order to prevent precipitation.
Product Overview of Lugalvan DC:
The usage of Lugalvan DC forms films which adhere well to metal.
Lugalvan DC is especially effective on chromated, zinc-plated parts and it also reduces the tendency of chromium(VI) ions to be leached out.
Lugalvan DC can be used to prevent nickel and other metals from tarnishing, and it can be applied as a decorative coating to non-ferrous metals.
Product Specifications of Lugalvan DC:
Physical Form: Aqueous, opalescent emulsion
Concentration: 20 – 22 %
Viscosity: 25 –170 at 23°C
Density 0.98 –1.00 g/cm3
pH: 8.5 – 9.
Primary Chemistry: Aqueous Solution
Sustainability performance of Lugalvan DC:
-Product with broad range of applications providing high corrosion protection and high resistance to many chemicals
-Label-free according to CLP
-No emulsifiers added
Chemical nature of Lugalvan DC:
Aqueous emulsion of an ethylene copolymer
Physical form of Lugalvan DC:
Aqueous, opalescent emulsion
Concentration: 20 – 22 %
(ISO 3251, 2 h at 120 °C)
Viscosity: 25 –170 s
(ISO 2431, 4 mm cup, 23 °C)
Density: 0.98 –1.00 g/cm3
(DIN 51757, Part 1, 23 °C, ASTM D 1298)
pH: 8.5 – 9.5
(ISO 976)
The above information is correct at the time of going to press.
It does not necessarily form part of Lugalvan DC specification.
Storage of Lugalvan DC:
The freeze-thaw stability of Lugalvan DC is very good.
Lugalvan DC's viscosity can undergo a slight, gradual increase during storage.
We would recommend filtering it if Lugalvan DC has been stored for a long time or if a crust has formed.
Lugalvan DC has a shelf life of one year, provided Lugalvan DC is stored properly.
Lugalvan DC can be applied by dipping, spinning or spraying.
The thickness of the film can be controlled by adjusting the viscosity of the emulsion.
The viscosity of the coating bath depends to a large extent on its solids content, but the pH also plays an important part.
Lugalvan DC tends to become less viscous at pH values above 9.5.
Normally, coatings with a solids content of 5 % will form a film approximately 1 µm thick.
Thicker films can be obtained by increasing the solids content, or multiple coats can be applied.
The latter is the best method from the point of view of ensuring that pigmented coatings are applied homogeneously.
Lugalvan DC can be advisable to dry coatings at elevated temperatures, depending on the thickness of the film.
Coatings can be removed from coating equipment, etc., with an alkaline stripper if they have not been cured.
The stripping process takes much longer if the coating has been cured.
Films formed from Lugalvan DC have a tensile strength of ca. 15 N/cm2 and an elongation at break as high as up to 400 %.
Safety of Lugalvan DC:
We know of no ill effects that could have resulted from using Lugalvan DC for the purpose for which it is intended and from processing it in accordance with current practice.
According to our information and experience, Lugalvan DC does not exert any harmful effects on health, provided that it is used properly, due attention is given to the precautions necessary for handling chemicals, and the information and advice given in our Safety Data Sheet are observed.
Handling of Lugalvan DC:
Lugalvan DC should be prevented from coming into contact with the eyes and skin.
Safety glasses should be worn when handling this product in its undiluted form.
Further information is given in our Safety Data Sheet.
Disposal of Lugalvan DC:
Lugalvan DC can be cleaned from coating equipment with aqueous, alkaline cleaners after it has dried.
The polymer can be removed from waste water by adjusting its pH so that it is slightly acid.
The precipitate can then be filtered out.
Concentration: 20 – 22 %
Viscosity: 25 –170 at 23°C
Density 0.98: –1.00 g/cm3
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